998194069 has 2 divisors, whose sum is σ = 998194070. Its totient is φ = 998194068.

The previous prime is 998194027. The next prime is 998194081. The reversal of 998194069 is 960491899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 639584100 + 358609969 = 25290^2 + 18937^2 .

It is an emirp because it is prime and its reverse (960491899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998194069 - 2⁷ = 998193941 is a prime.

It is a super-2 number, since 2×998194069² = 1992782798773553522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998194019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499097034 + 499097035.

It is an arithmetic number, because the mean of its divisors is an integer number (499097035).

Almost surely, 2^998194069 is an apocalyptic number.

It is an amenable number.

998194069 is a deficient number, since it is larger than the sum of its proper divisors (1).

998194069 is an equidigital number, since it uses as much as digits as its factorization.

998194069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 998194069 is about 31594.2094219811. The cubic root of 998194069 is about 999.3976602597.

The spelling of 998194069 in words is "nine hundred ninety-eight million, one hundred ninety-four thousand, sixty-nine".